Cremating sweeping-machine.



'A. S. EMERSON.

ORBMATING SWEEPING MACHINE.

APPLICATION FILED JAN.3,1908.

Patented Aug. 24, 1909.

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A. S. EMERSON.

CREMATING SWEEPING MACHINE.

APPLICATION FILED JAN.3,1908.

931,741. Patented Aug. 24, 1909.

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I I n Witnesses: Inventor; flfi'sddfflmenswfl A. S. EMERSON.

GREMATING SWEEPING MACHINE.

APPLICATION FILED JAE. 3, 1908;

Patented Aug. 24. 1909.

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Witnesses:

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ALFRED S. EMERSON, LONDON, ENGLAND.

CREMATING- SWEEPING-MACHINE.

931,7 41. Specification of Letters Patent Patented A11 24, 1909.

Application filed January 3, 1908.

T 0 all whom it may concern:

Be it known that I, ALFRED S. EMERSON, a'citizen of the United States,residing in London, England, have invented certain new and usefulImprovements in Cremating Sweeping-Machines, of which the following is aspecification.

This invention relates to street sweepers and has for an object toprovide an improved street sweeper which will dispose of the sweepingsby cremation.

In the drawings accompanying and forming a part of this specificationFigure 1 is a side elevation of apracticable embodiment of my presentimprovement. Fig. 2 is an enlarged rear end view of the device as shownin Fig. 1, showing, however, the sweeping device removed. Fig. 3 is anenlarged detail of the sweeping mechanism; and Fig. i is partly alongitudinal section and partly an elevation of the furnace on about thescale of Fig. 2.

The various parts of the mechanism are shown mounted upon a framework 4of the carriage which may be of automobile c011- struction. Thecremating furnace 5 will be located preferably forward of the sweepingsreceptacle 6, which receptacle is shown as of hopper formation, therebeing a pair of doors 7 which will direct the sweepings into a conveyerchannel 8 in which a worm 9 is located. Such worm will advance thesweepings into the fire chamberv of the furnace. The sweepings will begathered up by means of a rotary brush 10 which will throw the sweepingsupon an endless belt or apron 11 which is caused to travel and depositthe sweepings upon an endless belt or apron 12. It may here be remarkedthat the brush 10 does not come in contact with the endless apron 11 butthrows the dust and sweepings upon it. This feature, however, is notclaimed herein, but is claimed in my copending application, SerialNumber l2 l,691,filed by me under date of April 2nd, 1908. There arealso shown herein but claimed in my copending application certainscrapers 13 for preliminary cleaning the surface of the street. Thematerial found upon the street will be loosened by the scrapers, removedfrom the street by the brush, and thrown upon the apron 11, which will,by its movement, deposit the material upon the apron 12 which will bringthe sweepings up into the hopper portion of the receptacle where thefloor 7 of the hopper will carry Serial No. 409,199.

the sweepings to the worm 9 which will ad vance them into the tire ofthe furnace.

Street sweepings are of such a nature that when consumed by fire theywill create a great amount of smoke and noxious gases, which, ifpermitted to escape directly into the atmosphere, would become soobjectionable as to prevent the adoption of a cremating street sweeper.To take care of these gases 1 have provided in the smoke stack 15 a gascollector, and in the present illustration this embodies a pair of pipes16 which are disposed in such av position that they will intercept thepassage of those gases and products of combustion which it is desired tothrow backinto the fire.

It will be seen that the flue from the furnace has a substantiallyvertical portion 17, a horizontal portion 18, which is in the nature ofan offset toward one side, and a vertical portion 19, and that the pipes16 are located in the upper part of the transverse portion and aredisposed transversely of this portion. It has been found in practicethat those gases which are noxious, and the smoke, will travel along theupper part of the transverse portion, whereas the heated air will pursuea different path, and these gases, fumes, and unconsumed matter which isbeing borne along, will be intercepted by the collector and will passinto the perforations 20 therein and be disposed of. The pipes 16 areconnected with a pipe 21 which has an outlet 22 below the fire grate. Asteam pipe 23 enters the pipe 21 and has an opening 2-1 projectingtoward the fire or outlet 22 and will act as an injector sucking thegases and fumes down the pipe 21, which fumes together with the supplyof air for the tire will be driven through the fire by means of a fan,designated in a general way by 25. Steam for the injector and fordriving the motor shown in the conventional manner at 36 for the fan 25if desired may be furnished by a boiler which may be in the nature of awater jacket 26 surrounding one central line 27 of the furnace. The wall37, between which and the flue wall 27 the water space 36 for the waterjacket is contained, continues upwardly above the normal water level andaffords a steam space 38. The motor 36 will receive steam through a pipe39 entering such steam space. The pipe 23 also receives its supply ofsteam from such steam space.

The supply of fuel and water may be located in a tank or case 28 whichwill be convenient to the furnace and will constitute an insulator tothe furnace for the driver, who will occupy the seat 29.

The various parts of the mechanism may be driven by suitable chain beltsfrom the driving shaft 30 of the motor carried by the car for its selfpropulsion.

At times the street will become wet, due to shows, etc., which may arisewhile the apparatus is in use, and in such contingency to prevent thenecessity of having to return the machine to the barn idle it may beused as an ordinary street sweeper by disconnecting the clutch 31 whichdrives the worm 9 and by releasing the catches 32 of the door 7 whichwill then swing on hinges 33 and come against the sides 34 of thereceptacle 6. This receptacle may be provided with doors 35 at the sideswhereby the catches 32 may be operated and when the doors 7 are in theirhopper forming position the doors 35 may be employed for shoveling theashes and refuse of combustion from below the furnace grate into thelower part of the receptacle 6.

Having thus described my invention I claim:

1. The combination with means for sweeping the street, of a receptaclefor sweepings, a conveyor channel within said receptacle, a worm workingin said conveyer channel, a pair of doors within said receptacleconstituting a partition within the same and a hopper for said conveyerchannel, and means for holding the doors in their hopper formingposition.

2. The combination with means for sweeping the street, of a receptaclefor the sweep ings, a conveyer channel within said receptacle, aconveyer in said channel, and shiftable means within said receptacleforming hopper for said conveyer channel and adjustable to increase thecapacity of the receptacle.

Signed at Nos. 915 Hurray street, New York, N. Y., this 13th day of,December, 1907.

A. S. EMERSON.

WVitnesses CI-IAs. L. RUssELL, HENRY E. GREENWOOD.

